What's the most noteworthy/interesting game repack you've come across?
Some of them that come to mind for me are:
FitGirl's Escape from Tarkov repack that featured a single player mod
FitGirl's Half Life Alyx repack that with the NoVR mod
Gnarly's Tale of Two Wastelands repack that had everything ready to go after the install. No need to install both Fallout 3 & New Vegas and wait hours for things to compile
For older games I always recommend checking out MagiPack repacks, all their games are tested to work on Windows 7 and 10 but, thanks to the series of patches they pre-apply, they happen to be a plug&play experience on Linux too (and I don't need to go through the hassle of checking particular fixes a game needs to run on modern hardware).
For me it was downloading Quarantine that i originally had in 1994 on 3DO. Not the game so much, just that i totally forgot copy protection was done via physical codes back then.
here's how it looked, for example the game would give you a Weight and MPH value and you'd have to supply the 3 digit number that corresponds
"This a scan of the "Red Card", a copy protection scheme for Quarantine. This was black text on a deep red background that was hard to copy by black and white copiers of the era. Color copiers, which cost about a dollar a page had to be used. "
The copy protection for Quarantine was particularly interesting because it was thematic. Given the weight of a pedestrian and the speed of your car, how far will the body fly?
With the way you worded it, I just want to make sure you're aware that practically every windows game works on linux nowadays. You can install windows repacks/anything through lutris with minimal tweaking. Not only do cracks almost always work on linux, they sometimes even help compatibility by stripping out DRM junk.
Personally, I haven't gotten a crack to work that wasn't a LinuxRulez or Linux native repack. I can keep trying though. I know others have gotten it to work.
I guess it's not really the kind of notable that you're looking for, but ages ago a friend of mine downloaded a copy of Counter Strike: Source, which played the Death song To Forgive Is to Suffer in the main menu. It became literally the only death metal song he ever liked, evidently due to a tenuous connection with Counter Strike.
I'm not sure why but that made me wonder about other repacks like that and I wonder if someone has ever bundled the Star Wars mod for Call of Duty 4 together with the base game.